President Donald Trump’s administration plans to sell a dozen aircraft to Nigeria’s air force for the fight against the extremist group Boko Haram: the deal could be worth $600 million. Former President Barack Obama’s administration originally agreed on the sale, but delayed it after incidents including the Nigerian Air Force’s bombing a refugee camp in January that killed 90 to 170 civilians. Formal notification of the deal has not yet been sent to Congress but it will soon be. A senior Nigerian military source in Abuja, Nigeria’s capital, confirmed that the sale would go ahead and said it would also involve training, surveillance and military intelligence “to support the ongoing insurgency war”. There are questions about whether Nigeria will be able to pay the full $600 million for the aircraft, equipment, training and support. U.S. officials said Buhari raised frustration with delays in the sale in a phone call with Trump in February.